View Code of Problem 71

#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	int i,n;
	double t,a,b,k,sum=0;
	a=1;
	b=2;
	scanf("%d",&n);
	for(i=1;i<=n;i++){
		k=b/a;
		sum=sum+k;
		t=b;
		b=a+b;
		a=t;
	}
	printf("%.2lf\n",sum);
	return 0;
}